Home / 20,521.52-30,621.16-19,267.64

Finding the Fourth Proportional to 20,521.52, 30,621.16 and 19,267.64

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Solution

The fourth proportional to 20,521.52, 30,621.16 and 19,267.64 is: 28,750.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,521.52 : 30,621.16 = 19,267.64 : x
  2. Step 2: Convert to fraction form
    20,521.52/30,621.16 = 19,267.64/x
  3. Step 3: Cross multiply
    20,521.52x = 30,621.16 × 19,267.64
  4. Step 4: Simplify right side
    20,521.52x = 589,997,487.26
  5. Step 5: Solve for x
    x = 589,997,487.26/20,521.52
  6. Step 6: Final answer
    x = 28,750.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.